Vacuum truck scrubber system

ABSTRACT

A system and method scrub a vapor. In embodiments, a vacuum truck scrubber system includes a liquid vat, a first carbon canister, a second carbon canister, and a third carbon canister. The first carbon canister and the second carbon canister each contain carbon. The liquid vat is connected to the first carbon canister. The first carbon canister is connected to the second carbon canister. A vapor having contaminants is fed to the liquid vat and is introduced from the liquid vat to the first carbon canister wherein a portion of the contaminants is removed from the vapor. The vapor is introduced from the first carbon canister to the second carbon canister wherein another portion of the contaminants is removed. The vacuum truck scrubber system also includes a monitoring system for reading and recording of sample measurements in the first carbon canister, the second carbon canister and the third carbon canister.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a non-provisional that claims the benefit of U.S.application Ser. No. 13/567,116 filed on Aug. 6, 2012, which is now U.S.Pat. No. 8,597,602 issued Dec. 3, 2013 and that claims the benefit ofU.S. Application Ser. No. 61/515,690 filed on Aug. 5, 2011, which areall incorporated by reference herein in their entirety.

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not applicable.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to the field of vapor control and morespecifically to the field of vacuum truck scrubbers.

2. Background of the Invention

Vapors at industrial facilities may be controlled by a wide variety ofsystems. Scrubber systems are conventional systems for controlling suchvapors. Scrubber systems remove contaminants such as volatile organiccompounds (VOC's) from the vapor. Scrubber systems are typicallytransportable by truck. Drawbacks to such conventional scrubber systemsinclude inefficiencies in utilizing available space on the trucktrailers. Further drawbacks include inefficiencies with remotemonitoring of the systems.

Consequently, there is a need for an improved vacuum truck scrubbersystem.

BRIEF SUMMARY OF SOME OF THE PREFERRED EMBODIMENTS

These and other needs in the art are addressed in one embodiment by avacuum truck scrubber system that includes a liquid vat. A liquid isdisposed in the liquid vat. The vacuum truck scrubber system alsoincludes a first carbon canister. The liquid vat is connected to thefirst carbon canister. The first carbon canister contains carbon. Thevacuum truck scrubber system further includes a second carbon canister.The first carbon canister is connected to the second carbon canister.The second carbon canister contains carbon. In addition, the vacuumtruck scrubber system includes a third carbon canister. A vaporcomprising contaminants is fed to the liquid vat and is introduced fromthe liquid vat to the first carbon canister wherein a portion of thecontaminants is removed from the vapor. The vapor is introduced from thefirst carbon canister to the second carbon canister wherein anotherportion of the contaminants is removed from the vapor. Moreover, thevacuum truck scrubber system includes a monitoring system. Themonitoring system provides for reading and recording of samplemeasurements in the first carbon canister, the second carbon canisterand the third carbon canister.

These and other needs in the art are also addressed in anotherembodiment by a vacuum truck scrubber system that has a liquid vat. Aliquid is disposed in the liquid vat. The vacuum truck scrubber systemalso has a first carbon canister. The liquid vat is connected to thefirst carbon canister. The first carbon canister contains carbon. Thefirst carbon canister has a first canister sparger. In addition, thevacuum truck scrubber system has a second carbon canister. The firstcarbon canister is connected to the second carbon canister. The secondcarbon canister contains carbon. The second carbon canister has a secondcanister sparger. Moreover, the vacuum truck scrubber system has a thirdcarbon canister. The third carbon canister has a third canister sparger.A vapor having contaminants is fed to the liquid vat and is introducedfrom the liquid vat to the first carbon canister wherein a portion ofthe contaminants is removed from the vapor. The vapor is introduced fromthe first carbon canister to the second carbon canister wherein anotherportion of the contaminants is removed from the vapor.

The foregoing has outlined rather broadly the features and technicaladvantages of the present invention in order that the detaileddescription of the invention that follows may be better understood.Additional features and advantages of the invention will be describedhereinafter that form the subject of the claims of the invention. Itshould be appreciated by those skilled in the art that the conceptionand the specific embodiments disclosed may be readily utilized as abasis for modifying or designing other embodiments for carrying out thesame purposes of the present invention. It should also be realized bythose skilled in the art that such equivalent embodiments do not departfrom the spirit and scope of the invention as set forth in the appendedclaims.

BRIEF DESCRIPTION OF THE DRAWINGS

For a detailed description of the preferred embodiments of theinvention, reference will now be made to the accompanying drawings inwhich:

FIG. 1 illustrates a front view of an embodiment of a vacuum truckscrubber system;

FIG. 2 illustrates a top view of the embodiment of a vacuum truckscrubber system shown in FIG. 1;

FIG. 3 illustrates a left view of the embodiment of a vacuum truckscrubber system shown in FIG. 1;

FIG. 4 illustrates a right view of the embodiment of a vacuum truckscrubber system shown in FIG. 1;

FIG. 5 illustrates an embodiment of a canister sparger;

FIG. 6 illustrates a side perspective view of an embodiment of a vacuumtruck scrubber system with the carbon canisters disposed in a triangularconfiguration;

FIG. 7 illustrates another side perspective view of the embodiment of avacuum truck scrubber shown in FIG. 6;

FIG. 8 illustrates an embodiment of a monitoring system; and

FIG. 9 illustrates a front view of an embodiment of a vacuum truckscrubber system.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

FIG. 1 illustrates a front view of an embodiment of vacuum truckscrubber system 5 in which vacuum truck scrubber system 5 includesliquid vat 10, first carbon canister 15, second carbon canister 20, andthird carbon canister 25. FIG. 2 illustrates a top view of theembodiment of vacuum truck scrubber system 5 shown in FIG. 1. Vacuumtruck scrubber system 5 is used for vapor control and degassingprocesses such as removing contaminants from vapor. Any contaminants maybe removed. In embodiments, the contaminants include volatile organiccompounds (e.g., VOC's). Without limitation, vacuum truck scrubbersystem 5 provides a portable and automatic scrubber system that allowsremote monitoring and storing of data. In embodiments, vacuum truckscrubber system 5 is a portable system. Vacuum truck scrubber system 5may be moved by any suitable means. Without limitation, embodimentsinclude vacuum truck scrubber system 5 being moved by trailer, rail car(i.e., moveable by train when disposed on a rail car), and the like. Inembodiments in which vacuum truck scrubber system 5 is moveable bytrailer, the trailer may be moveable by any suitable means such as bytruck, tractor, and the like. FIGS. 6 and 7 illustrate embodiments inwhich vacuum truck scrubber system 5 is disposed on bed 205 of trailer130.

The vapor fed to vacuum truck scrubber system 5 may be from any vaporsource. Without limitation, examples of vapor sources include vacuumtrucks, process equipment, water-going vessels, and the like. Anyprocess equipment in which vapor is desired to be scrubbed may be used.Without limitation, examples of suitable process equipment includevessels, tanks, columns, towers, API separators, and the like. Anywater-going vessel in which vapor is desired to be scrubbed may be used.Without limitation, examples of suitable water-going vessels includetanker ships, barges, and the like. In an embodiment, the vapor sourceis a vacuum truck. In an embodiment, the vapor is the exhaust vapor fromthe vacuum truck. The vapor may be fed to vacuum truck scrubber system 5by any suitable means such as, without limitation, eductor, blower, andthe like.

As shown in FIGS. 1, 2, 3, 4, and 9, vacuum truck scrubber system 5 hasliquid vat 10. Liquid vat 10 has vapor connection 30 to allow liquid vat10 to be connected to the means (i.e., pipe, hose, line, and the like)by which vapor is introduced to vacuum truck scrubber system 5. In anembodiment, vapor 65 from a vacuum truck (not illustrated) is introducedby a line (not illustrated) to vacuum truck scrubber system 5. The line(not illustrated) is connected to liquid vat 10 at vapor connection 30.From vapor connection 30, vapor 65 is fed into liquid vat 10 via feedpipe 35. Feed pipe 35 may have any suitable configuration anddimensions. In an embodiment as shown, feed pipe 35 has reducer 40between different sized sections of feed pipe 35. From feed pipe 35,vapor 65 flows through vat sparger 45 and into interior 210 of liquidvat 10. Interior 210 contains liquid 60. In an embodiment, vat sparger45 is disposed in liquid 60. Vat sparger 45 may have any suitableconfiguration for dispersing vapor 65 into liquid 60. Liquid 60 mayinclude any liquid suitable for use in scrubbing vapor 65 of any desiredcontaminants (i.e., contaminants such as VOC's). In embodiments, liquid60 includes diesel, water-based oxidizers, or any combinations thereof.Any water-based oxidizer suitable for use in scrubbing vapor 65 ofcontaminants may be used. Without limitation, a suitable water-basedoxidizer is ZYME-FLOW®, which is a registered trademark of UnitedLaboratories International, LLC. In embodiments, vacuum truck scrubbersystem 5 includes selecting a liquid 60 to remove a certain contaminant,with the selected liquid 60 having known capability to remove thecertain contaminant. Without being limited by theory, by selecting suchliquid 60, the length of the life of the carbon in the canisters (e.g.,first carbon canister 15, second carbon canister 20, and third carboncanister 25) may be lengthened. In addition, without being limited bytheory, the acid and basic gases may be treated.

As further shown in FIGS. 1, 2, 3, 4, and 9, embodiments of vacuum truckscrubber system 5 include vapor 65 flowing upward from vat sparger 45through liquid 60, which scrubs (i.e., removes) a portion of thecontaminants from vapor 65. In an embodiment, vapor 65 then flows out ofliquid vat 10. In embodiments as shown, vapor 65 flows through demisterpad 70 before exiting liquid vat 10. Demister pad 70 may be disposed atany suitable location within liquid vat 10 whereby vapor 65 flowstherethrough before exiting liquid vat 10. Without limitation, anysuitable type of demister device and configuration may be used asdemister pad 70. Further, without limitation, demister pad 70 preventsor reduces the amount of liquid from entering into flame arrestor 75. Inembodiments, liquid vat 10 also includes pressure gauge 80, sight glass85, and temperature gauge 110, which may be disposed at any suitablelocation on liquid vat 10. In some embodiments as shown, liquid vat 10also has eye hook 115 disposed at a top portion of liquid vat 10. In anembodiment as shown, liquid vat 10 also has check valve 200 disposed onvapor connection 30. In embodiments, first carbon canister 15, secondcarbon canister 20, and/or third carbon canister 25 have a valve 160disposed at vapor 65 exit, which regulates whether the exit is opened orclosed.

As further shown, liquid vat 10 also includes flame arrestor 75. Flamearrestor 75 may include any type of flame arrestor suitable forpreventing flashback from a carbon canister (i.e., first carbon canister15, second carbon canister 20, and third carbon canister 25) into liquidvat 10. Liquid vat 10 also includes vat base 50, which has vat baseopenings 55. In an embodiment, vat base openings 55 are sufficient toallow liquid vat 10 to be moved by a fork-lift.

In an embodiment, first carbon canister 15, second carbon canister 20,and third carbon canister 25 contain carbon. In embodiments, the carbonis activated carbon. Without limitation, the activated carbon mayinclude any activated carbon suitable for removing contaminants. Inembodiments, the carbon is impregnated activated carbon. The activatedcarbon may be impregnated by any additive suitable for scrubbing vapor65. Without limitation, examples of suitable additives for impregnationinclude potassium hydroxide, iodine, silver, aluminum, amine-basedchemicals, manganese, zinc, iron, lithium, calcium or any combinationsthereof. Further, without limitation, the impregnated activated carbonremoves acid and/or basic components from vapor 65. In some embodiments,the activated carbon substantially fills the interior of each of firstcarbon canister 15, second carbon canister 20, and third carbon canister25.

As shown in FIGS. 1, 2, 3, 4, and 9, vapor 65 exiting liquid vat 10flows through canister feed 90 to first carbon canister 15. Canisterfeed 90 may be any device suitable for feeding vapor 65 to a carboncanister (e.g., first carbon canister 15, second carbon canister 20, orthird carbon canister 25). In an embodiment, canister feed 90 is aflexible hose. In embodiments, the flexible hose comprises stainlesssteel. In embodiments as shown, vapor 65 exits liquid vat 10 at the topside of liquid vat 10 and is fed to first carbon canister 15 at aboutthe bottom of a side of first carbon canister 15. In embodiments, suchbottom of a side is about distal to the exit of vapor 65 from firstcarbon canister 15. Vapor 65 is dispersed into first carbon canister 15via canister sparger 105. Canister sparger 105 is disposed at about thebottom of the interior of first carbon canister 15. Canister sparger 105may have any configuration suitable for dispersing the vapor into thecarbon in first carbon canister 15. In an embodiment, canister sparger105 has openings on the side of canister sparger 105 through which vapor65 flows. Without limitation, disposing the openings on the side ofcanister sparger 105 prevents channeling in the carbon. Further, withoutlimitation, disposing the openings on the side prevents plugging of theopenings by the carbon.

FIG. 5 illustrates an embodiment of canister sparger 105 in whichcanister sparger 105 has canister sparger body 120, canister spargerarms 125, sparger vapor entry 220, and sparger end 225. In suchembodiments, canister sparger arms 125 extend from canister sparger body120. Canister sparger arms 125 may extend at any suitable angle tocanister sparger body 120. In an embodiment, canister sparger arms 125are disposed about perpendicular to sides 215 of canister sparger body120. In such embodiments, vapor 65 flows into canister sparger body 120from canister feed 90 via sparger vapor entry 220. From canister spargerbody 120, vapor 65 flows into canister sparger arms 125. In embodiments,canister sparger arms 125 have openings on the sides 230 of canistersparger arms 125 (i.e., and not on the top side of canister sparger arms125) through which vapor 65 flows. In embodiments, each canister sparger105 has a valve (i.e., ball valve) at the connection with canister feed90.

In embodiments as shown in FIGS. 1, 2, and 9, first carbon canister 15,second carbon canister 20, and third carbon canister 25 have canisterbases 95. Each canister base 95 has canister base openings 100. In anembodiment, canister base openings 100 are sufficient to allow thecorresponding first carbon canister 15, second carbon canister 20 orthird carbon canister 25 to be moved by a fork-lift. In otherembodiments, first carbon canister 15, second carbon canister 20, and/orthird carbon canister 25 have monitoring devices such as temperaturegauges 110, pressure gauges 80, sample ports (not illustrated), sightglasses 85, and the like. In an embodiment, the sample ports aredisposed on the entrance and exit of each carbon canister. Withoutlimitation, the sample ports facilitate monitoring of VOC levels. Forinstance, the sample ports may be disposed on canister feeds 90 (e.g.,hoses) at the entrance and exit of each carbon canister. In otherembodiments as shown, first carbon canister 15, second carbon canister20, and/or third carbon canister 25 have fire systems 190 such assidewall sprinklers. In addition, embodiments include first carboncanister 15, second carbon canister 20, and/or third carbon canister 25having pressure relief valves 185. Moreover, first carbon canister 15,second carbon canister 20, and/or third carbon canister 25 embodimentshave vessel access 180. Embodiments of vessel access 180 include asufficient configuration and size to allow a human to enter. In someembodiments, first carbon canister 15, second carbon canister 20, and/orthird carbon canister 25 have vacuum breakers 195. In an embodiment,vacuum breaker 195 is disposed at a top portion of first carbon canister15, second carbon canister 20, and/or third carbon canister 25.

In further embodiments as shown, first carbon canister 15, second carboncanister 20, and third carbon canister 25 each have carbon removal means165. Carbon removal means 165 may include any means suitable for removalof the carbon (and for replacing the removed carbon) from a carboncanister. In embodiments, carbon removal means 165 includes a gatevalve. In an embodiment, to remove the carbon from a carbon canister,the carbon canister is lifted up (i.e., by fork lift), and the carbonremoval means 165 (e.g., gate valve) is actuated (i.e., opened), whichallows the carbon to fall through the bottom (or alternatively a side)of the carbon canister. In some embodiments, the carbon canister hasdoors (not illustrated) such as butterfly doors on the bottom throughwhich the carbon exits the carbon canister. Without limitation, a gatevalve allowing the carbon to be removed at the bottom of the carboncanister facilitates efficient removal of the carbon instead of removingthe carbon at the top of the carbon canister.

In other embodiments as shown in FIGS. 1, 2, and 9, first carboncanister 15, second carbon canister 20, and/or third carbon canister 25also include a screen 170 disposed at about the top of the interior ofthe carbon canister. In some embodiments, screen 170 comprises mesh.Screen 170 comprises a configuration sufficient to prevent the carbonfrom exiting through the top of the carbon canister.

In embodiments as shown in FIGS. 1, 2, 4, and 9, first carbon canister15, second carbon canister 20, and third carbon canister 25 havecanister securing means 175. Canister securing means 175 include anymeans suitable for securing the carbon canisters to a trailer. Examplesof suitable canister securing means 175 include strap guides and thelike. In some embodiments (not illustrated), canister securing means 175includes a cam lock. For instance, in embodiments, the cam lock isattached to bed 205 and rotates to attach the canister to bed 205.

In embodiments as shown in FIGS. 1, 2, 3, 4, and 9, vapor 65 flowsupward through the carbon in first carbon canister 15, which removes aportion (or alternatively about all) of the contaminants from vapor 65.Vapor 65 then exits first carbon canister 15 at the top of first carboncanister 15 and is introduced to second carbon canister 20 by canisterfeed 90. Vapor 65 is introduced to canister sparger 105 and is dispersedinto the carbon in second carbon canister 20. In embodiments as shown inFIG. 9, vapor 65 flows up through the carbon (with the carbon removingcontaminants from vapor 65) and exits at the top of second carboncanister 20 (i.e., to atmosphere). In such embodiments as shown in FIG.9, second carbon canister 20 is not connected to third carbon canister25 by canister feed 90. Without limitation, third carbon canister 25 isa reserve canister. In regards to the embodiments of FIGS. 1 and 2,canister feeds 90 are shown attached to first carbon canister 15, secondcarbon canister 20, and third carbon canister 25 for illustrativepurposes only. In embodiments, upon a selected criteria being achievedin a carbon canister, such carbon canister is taken off line andreplaced by the reserve canister (e.g., third carbon canister 25) asshown in FIG. 9. For instance, in such an embodiment, upon achievementof the criteria in first carbon canister 10, the attachment of liquidvat 10 to first carbon canister 10 by canister feed 90 is removed (i.e.,the canister feed 90 is unattached), and the attachment of first carboncanister 10 to second carbon canister 15 by the canister feed 90 isremoved (i.e., the canister feed 90 is unattached). In such embodiments,liquid vat 10 is then attached to second carbon canister 15 or thirdcarbon canister 20 by canister feed 90, and second carbon canister 15 isattached to third carbon canister 20 by a canister feed 90. In suchembodiments, liquid vat 10 is attached to second carbon canister 15.First carbon canister 10 then has its carbon replaced and becomes thereserve canister. Vacuum truck scrubber system 5 continues its operationwith vapor 65 exiting liquid vat 10 to second carbon canister 20 (withvapor 65 flowing upward through the carbon to remove a portion of aboutall of the contaminants) and then to third carbon canister 25. Vapor 65flows through the carbon removing contaminants (i.e., a portion or aboutall) and exits at the top of third carbon canister 25 to atmosphere.Upon a selected criteria being achieved in second carbon canister 20,second carbon canister 20 is taken off line and replaced by the reservecanister (e.g., first carbon canister 15). Liquid vat 10 is thenattached to third carbon canister 25 (or alternatively first carboncanister 15) by canister feed 90, and third carbon canister 25 isattached to first carbon canister 15 by a canister feed 90. Secondcarbon canister 20 then has its carbon replaced and becomes the reservecanister. Vapor 65 then exits liquid vat 10 to third carbon canister 25and from third carbon canister 25 to first carbon canister 15, withvapor 65 exiting at the top of first carbon canister 25 to atmosphere.Upon a selected criteria being achieved in third carbon canister 25,third carbon canister 25 is taken off line and replaced by the reservecanister (e.g., second carbon canister 20). Liquid vat 10 is thenattached to first carbon canister 15 (or alternatively second carboncanister 20) by canister feed 90, and first carbon canister 15 isattached to second carbon canister 20 by a canister feed 90. Thirdcarbon canister 25 then has its carbon replaced and becomes the reservecanister. The cycle continues as long as desired with the canistersbeing rotated as the reserve canisters as described above.

The criteria at which a carbon canister is taken off line for carbonreplacement may be any desired criteria. In embodiments, a carboncanister is taken off line when a selected contaminant level in thecarbon canister is reached. In an embodiment, the contaminant level is aVOC level. In embodiments, a carbon canister is taken off line when theVOC level reaches about 50 ppm, alternatively reaches about 75 ppm, andalternatively reaches about 90 ppm, and further alternatively reachesabout 100 ppm.

FIGS. 6 and 7 illustrate an embodiment of vacuum truck scrubber system 5in which liquid vat 10, first carbon canister 15, second carbon canister20, and third carbon canister 25 are disposed on bed 205 of trailer 130with first carbon canister 15, second carbon canister 20, and thirdcarbon canister 25 disposed in a substantially triangular configuration.Without limitation, the substantially triangular configurationfacilitates connection of a carbon canister to another carbon canister.Further, without limitation, the substantially triangular configurationfacilitates efficient use of the available space on bed 205.

As further shown in FIGS. 6 and 7, embodiments of vacuum truck scrubbersystem 5 include bed 205 having placement guides 235. In embodiments,bed 205 has a placement guide 235 for at least one corner of vat base50, canister base 95 of first carbon canister 15, canister base 95 ofsecond carbon canister 20, and/or canister base 95 of third carboncanister 25. In an embodiment, bed 205 has a placement guide 235 foreach corner (e.g., all four corners) of vat base 50, canister base 95 offirst carbon canister 15, canister base 95 of second carbon canister 20,and/or canister base 95 of third carbon canister 25.

In alternative embodiments (not illustrated), vacuum truck scrubbersystem 5 has more than one reserve canister. In embodiments, one of thereserve canisters is disposed on bed 205, and the other reservecanisters are not disposed on bed 205.

In embodiments as shown in FIG. 8, vacuum truck scrubber system 5includes monitoring system 135. Monitoring system 135 includes monitor140, transmitter 145, portable station 150, and viewing station 155.Monitoring system 135 allows for continuous reading and recording ofsample measurements such as contaminant (i.e., VOC levels) in eachcarbon canister. In an embodiment, a transmitter 145 is disposed on eachcarbon canister. In some embodiments, a transmitter 145 is disposed onliquid vat 10. Transmitter 145 may be any transmitter suitable fortransmitting signals to monitor 140. For instance, in an embodiment,transmitter 145 has a transmitter and sensors that measure content ofvapor 65 such as oxygen, toxins, VOC's and the like. Monitor 140 is anydevice suitable for reading and recording transmitted signals fromtransmitter 145. In embodiments, VOC levels in a carbon canister aredetermined by measuring the VOC level of vapor 65 feed to a carboncanister (e.g., from a sample port on canister feed 90) and measuringthe VOC level of vapor 65 exiting the carbon canister (e.g., from asample port on the exit of the carbon canister or on the canister feed90 exiting the carbon canister). The difference between the VOC levelsis determined and transmitted by transmitter 145 to monitor 140. Inembodiments, monitor 140 is attached to trailer 130. Monitor 140 allowsfor reading and recording of VOC's and other measurements. Embodimentsof monitor 140 also include setting of alarms that will providenotification when the criteria (e.g., targets) are achieved. Forinstance, the selected criteria (e.g., a target) may be a certain ppmlevel of VOC in a carbon canister. When the target is achieved, an alarmprovides notification that the VOC level has been achieved or is withina range of being achieved. In embodiments, such target level may includewhen a carbon canister may be taken off line and serviced, and thenon-connected carbon canister (i.e., the reserve carbon canister) maythen be connected to the other carbon canister. In an embodiment, atarget is set for first carbon canister 15. In embodiments, the targetis set with sufficient leeway to allow time to change out the desiredcarbon canisters. In some embodiments, monitor 140 transmits signals toportable stations 150. Portable stations 150 may be any suitableportable station for receiving a signal. In embodiments, portablestations 150 are cellular phones. In such embodiments, monitor 140 sendsa message such as a text message to the portable station (e.g., cellularphone) that a target is achieved or about to be achieved. Monitor 140may also transmit signals to viewing stations 155. Such viewing stations155 may be remote from vacuum truck scrubber system 5. Viewing stations155 may be any device suitable for allowing transmitted data to bestored and viewed. For instance, an example of a suitable viewingstation 155 is a computer. In some embodiments, monitoring system 135allows monitor 140 to be controlled remotely from portable stations 150and/or viewing stations 155. In embodiments, monitor 140 and/ortransmitters 145 are intrinsically safe. In other embodiments,monitoring system 135 includes GPS capability. In an embodiment, monitor140 and/or transmitters 145 have GPS capability. Without limitation, theGPS capability allows for the location of vacuum truck scrubber system 5to be monitored. In embodiments, monitoring system 135 includes backgrounding for the two connected carbon canisters. For instance, for thetwo connected carbon canisters, samples may be taken, and the VOC levelsmay be determined, which levels may be set as the base line. The targetmay then be set based on the baseline.

Although the present invention and its advantages have been described indetail, it should be understood that various changes, substitutions andalterations may be made herein without departing from the spirit andscope of the invention as defined by the appended claims.

What is claimed is:
 1. A vacuum truck scrubber system, comprising: aliquid vat, wherein a liquid is disposed in the liquid vat; a firstcarbon canister, wherein the liquid vat is connected to the first carboncanister, and wherein the first carbon canister contains carbon; asecond carbon canister, wherein the first carbon canister is connectedto the second carbon canister, and wherein the second carbon canistercontains carbon; a third carbon canister, wherein a vapor comprisingcontaminants is fed to the liquid vat and is introduced from the liquidvat to the first carbon canister wherein a portion of the contaminantsis removed from the vapor, and wherein the vapor is introduced from thefirst carbon canister to the second carbon canister wherein anotherportion of the contaminants is removed from the vapor; and a monitoringsystem, wherein the monitoring system provides for reading and recordingof sample measurements in the first carbon canister, the second carboncanister and the third carbon canister.
 2. The vacuum truck scrubbersystem of claim 1, wherein the monitoring system comprises a transmitterdisposed on the first carbon canister, a second transmitter disposed onthe second carbon canister, and a third transmitter disposed on thethird carbon canister.
 3. The vacuum truck scrubber system of claim 2,wherein the transmitter comprises a sensor, the second transmittercomprises a second sensor, and the third transmitter comprises a thirdsensor.
 4. The vacuum truck scrubber system of claim 3, wherein thesensor measures a first carbon canister vapor content, the second sensormeasures a second carbon canister vapor content, and the third sensormeasures a third carbon canister vapor content.
 5. The vacuum truckscrubber system of claim 2, wherein the monitoring system furthercomprises a monitor.
 6. The vacuum truck scrubber system of claim 5,wherein the transmitter, the second transmitter, and the thirdtransmitter transmit signals to the monitor.
 7. The vacuum truckscrubber system of claim 1, wherein the monitoring system measures vaporcontent.
 8. The vacuum truck scrubber system of claim 7, wherein thevapor content comprises volatile organic compound levels in the vapor.9. The vacuum truck scrubber system of claim 1, wherein the monitoringsystem comprises a transmitter disposed on the liquid vat.
 10. Thevacuum truck scrubber system of claim 1, wherein the monitoring systemprovides an alarm when a criteria is achieved.
 11. A vacuum truckscrubber system, comprising: a liquid vat, wherein a liquid is disposedin the liquid vat; a first carbon canister, wherein the liquid vat isconnected to the first carbon canister, and wherein the first carboncanister contains carbon, and further wherein the first carbon canistercomprises a first canister sparger; a second carbon canister, whereinthe first carbon canister is connected to the second carbon canister,and wherein the second carbon canister contains carbon, and furtherwherein the second carbon canister comprises a second canister sparger;and a third carbon canister, wherein the third carbon canister comprisesa third canister sparger, and wherein a vapor comprising contaminants isfed to the liquid vat and is introduced from the liquid vat to the firstcarbon canister wherein a portion of the contaminants is removed fromthe vapor, and wherein the vapor is introduced from the first carboncanister to the second carbon canister wherein another portion of thecontaminants is removed from the vapor.
 12. The vacuum truck scrubbersystem of claim 11, wherein the third carbon canister comprises carbon.13. The vacuum truck scrubber system of claim 12, wherein the firstcanister sparger, the second canister sparger, and the third canistersparger are disposed in carbon.
 14. The vacuum truck scrubber system ofclaim 11, wherein the first canister sparger, the second canistersparger, and the third canister sparger each comprise a canister spargerbody and canister sparger arms.
 15. The vacuum truck scrubber system ofclaim 14, wherein the canister sparger arms extend from the canistersparger body.
 16. The vacuum truck scrubber system of claim 14, whereinthe canister sparger arms have openings through which the vapor flowsfrom the canister sparger body.
 17. The vacuum truck scrubber system ofclaim 16, wherein the openings are disposed on a side of the canistersparger arms.
 18. The vacuum truck scrubber system of claim 16, whereinthe openings are not disposed on a top side of the canister spargerarms.
 19. The vacuum truck scrubber system of claim 11, wherein thefirst canister sparger, the second canister sparger, and the thirdcanister sparger each have a valve.
 20. The vacuum truck scrubber systemof claim 19, wherein the first carbon canister, the second carboncanister, and the third carbon canister each have a canister feed, andwherein the valve of each of the first canister sparger, the secondcanister sparger, and the third canister sparger is disposed at about aconnection of the canister feed.